Methods for the digestion of soluble components isolated from the spent grains of a fermentation process

This invention describes a way to turn leftover grains from brewing or fermentation into natural gas. It works by first taking the spent grains and removing most of the solid bits, leaving behind a liquid with very few suspended particles, specifically less than 2,000 parts per million. This cleaner liquid is then fed into a special tank called an anaerobic digester, where microbes convert the organic material into biogas.